commit f1ca0dc

Highlight channels with unread messages at startup

When processing history messages, if any of them are newer than the
channel's "last seen" timestamp, properly highlight the corresponding
channel.

Fixes: https://todo.sr.ht/~taiite/senpai/112

 1@@ -428,6 +428,7 @@ func (bs *BufferList) AddLines(netID, title string, before, after []Line) {
 2 	if b == nil {
 3 		return
 4 	}
 5+	updateRead := b != bs.cur() && !b.read.IsZero()
 6 
 7 	lines := make([]Line, 0, len(before)+len(b.lines)+len(after))
 8 	for _, buf := range []*[]Line{&before, &b.lines, &after} {
 9@@ -446,6 +447,15 @@ func (bs *BufferList) AddLines(netID, title string, before, after []Line) {
10 				}
11 				lines = append(lines, line)
12 			}
13+
14+			if updateRead && line.At.After(b.read) {
15+				if line.Notify != NotifyNone {
16+					b.unread = true
17+				}
18+				if line.Notify == NotifyHighlight {
19+					b.highlights++
20+				}
21+			}
22 		}
23 	}
24 	b.lines = lines